EXAMPLE 1
Evaluate
inverse trigonometric functions
Evaluate the
expression in both radians and degrees.
3
( –
)
c.
tan–1
√
SOLUTION
c.
When – < θ
< , or – 90° < θ < 90°, the
angle whose tangent is – is:
π
2
π
2
√
3
( –
)
tan–1
3
√
θ
=
π
3
–
=
( –
)
tan–1
3
√
θ
=
–60°
=